RUSTSEC-2019-0019

    Dashboard / Vulnerabilities / RUSTSEC-2019-0019

    RUSTSEC-2019-0019

    Published: 25 Aug 2019Last Modified: 8 Nov 2023

    Summary: HMAC-BLAKE2 algorithms compute incorrect results

    Details: When used in conjunction with the Hash-based Message Authentication Code (HMAC), the BLAKE2b and BLAKE2s implementations in `blake2` crate versions prior to v0.8.1 used an incorrect block size (32-bytes instead of 64-bytes for BLAKE2s, and 64-bytes instead of 128-bytes for BLAKE2b), causing them to miscompute the `MacResult`. The v0.8.1 release of the `blake2` crate uses the correct block sizes. Note that this advisory only impacts usage of BLAKE2 with HMAC, and does not impact `Digest` functionality.

    References: https://crates.io/crates/blake2, https://rustsec.org/advisories/RUSTSEC-2019-0019.html, https://github.com/RustCrypto/MACs/issues/19

    Affected packages

    Package

    Name: blake2

    Purl: pkg:cargo/blake2

    Affected ranges

    Type: SEMVER

    Events:

    Introduced- 0.0.0-0
    Fixed -0.8.1

    Affected versions

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High